Who was the ninth President of the United States, who died after about a month in office?

Who was the fifth President of the United States? Who was the sixth President of the United States? Who was the seventh President of the United States? Who was the eighth President of the United States? Who was the tenth President of the United States? Who was the 11th President of the United States? Who was the 12th President of the United States? Who was the 13th President of the United States?